AEG ME09 Installation, Operation And Maintenance Manual page 49

ST ZSI GF ZSI
ZSI
2.2.6 (Com)
Mpro N
Modbus
ME09
Modbus
Modbus
485
300 600 1200 2400 4800 9600
19200
2 .9
2 .1 0
(I)
Modbus
+24 VDC
Modbus
Modbus
2.5
TRIP UNIT
TBoth the ST ZSI as the GF ZSI Delay Bands are set independently
using the same bands and op ons as the standard device.
When a ZSI input received an upstream breaker will temporarily
delay it' s tripping on the Instantaneous (I) device un l the fault
is cleared by the downstream device.
2.2.6 Communica on (Com)
The Mpro N type Trip Unit can op onally be equipped with the
Modbus communica on protocol. For this device to func on
correctly +24 VDC external power must supply the trip unit.
The connec on to Modbus are made via speci cally assigned
connec on points located on the standard terminal block
on the top of the ME09 circuit breaker.
The Trip Units are fully compliant with Modbus Protocol. Full
details of the Modbus protocol can be found in the Modbus
Protocol Speci ca on.Two wire Modbus 485 are supported.
The link Host may operate at a 300, 600, 1200, 2400, 4800, 9600
or 19200-baud rate. An overview of the communica on
parameters and register is included in Sec on 2.5 of this
manual.
Ta ble 2.9
Input Input Assignment Summary Description
OFF No action taken.
TRIP Causes the breaker to trip.
RELT C a us es unit to us e the
1
RELTs etpoint a s long a s
input isactive.
Note: RELT must be set to
REMOTE
OFF No action taken.
2
TRIP Causes the breaker to trip.
Ta ble 2.10
Group Description
Assignment
Overcurrent Trip An Overcurrent trip will
(LT,ST I or GF) set the relay to ' ON' .
Relay contact will be
1
closed or opendepending
Health status
on the hea lth c onta c t
setting.
Output relay contact
Reduced
2 closes when the RELT
Instantaneous
pickup is enabled.
2.
2
ed
2.2-07